@misc{indiciae4166052511d2,
  title = {Geologic map of the San Gorgonio Wilderness, San Bernardino County, California},
  author = {D. M. Morton and B. F. Cox and J. C. Matti},
  year = {1980},
  doi = {10.3133/mf1161a},
  url = {https://pubs.usgs.gov/publication/mf1161A},
  note = {Source identifier: mf1161A}
}